If you are tired of style, you can try Material which is exactly what you need.
Beautiful icons with muted colors and stylish wallpapers
All the icons are 192×192 in size and are drawn manually and will therefore appear on your screen without issue.
User friendly app with user friendly interface for easy Android 7.0 style operation
+ More than 2600 highly detailed icons
+ 14 QHD cloud wallpapers
+ Regular updates
+ Request icon tool to sort missing icons
+ Dynamic calendars
+ Muzei support

Supported Android
(4.1 and up)
Lollipop (5.0 – 5.1.1),Marshmallow (6.0 – 6.0.1),Nougat (7.0 – 7.1.1),Oreo (8.0-8.1), Pie(9.0)